On a side note, I never understand why the big oil companies lobby against alternative forms of energy. Energy is their field and their product. They should be investing in future avenues for their companies. Much like horse-carriage makers evolved and got into auto manufacturing (Studebaker) or Coca-Cola getting into bottled water (Dasani) for a health-conscious market. It's a natural extension of the business. Am I being too naive and missing something? Perhaps the big oil companies want the little guys to make all the initial investments and then swoop in and buy them out once the technology has been perfected. It seems the auto makers did that with electric car technology.